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    Subject[PATCH AUTOSEL 4.9 08/45] drm/bridge: sii902x: pixel clock unit is 10kHz instead of 1kHz
    Date
    From: Jyri Sarha <jsarha@ti.com>

    [ Upstream commit 8dbfc5b65023b67397aca28e8adb25c819f6398c ]

    The pixel clock unit in the first two registers (0x00 and 0x01) of
    sii9022 is 10kHz, not 1kHz as in struct drm_display_mode. Division by
    10 fixes the issue.

    Signed-off-by: Jyri Sarha <jsarha@ti.com>
    Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
    Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
    Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/1a2a8eae0b9d6333e7a5841026bf7fd65c9ccd09.1558964241.git.jsarha@ti.com
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/gpu/drm/bridge/sii902x.c | 5 +++--
    1 file changed, 3 insertions(+), 2 deletions(-)

    diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
    index 9126d0306ab5..51e2d03995a1 100644
    --- a/drivers/gpu/drm/bridge/sii902x.c
    +++ b/drivers/gpu/drm/bridge/sii902x.c
    @@ -250,10 +250,11 @@ static void sii902x_bridge_mode_set(struct drm_bridge *bridge,
    struct regmap *regmap = sii902x->regmap;
    u8 buf[HDMI_INFOFRAME_SIZE(AVI)];
    struct hdmi_avi_infoframe frame;
    + u16 pixel_clock_10kHz = adj->clock / 10;
    int ret;

    - buf[0] = adj->clock;
    - buf[1] = adj->clock >> 8;
    + buf[0] = pixel_clock_10kHz & 0xff;
    + buf[1] = pixel_clock_10kHz >> 8;
    buf[2] = adj->vrefresh;
    buf[3] = 0x00;
    buf[4] = adj->hdisplay;
    --
    2.20.1
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